oumi

Oumi is a fully open-source platform that streamlines the entire lifecycle of foundation models - from data preparation and training to evaluation and deployment. Whether you're developing on a laptop, launching large scale experiments on a cluster, or deploying models in production, Oumi provides the tools and workflows you need.

With Oumi, you can:

• ?? Train and fine-tune models from 10M to 405B parameters using state-of-the-art techniques (SFT, LoRA, QLoRA, DPO, and more)
• ?? Work with both text and multimodal models (Llama, DeepSeek, Qwen, Phi, and others)
• ?? Synthesize and curate training data with LLM judges
• ?? Deploy models efficiently with popular inference engines (vLLM, SGLang)
• ?? Evaluate models comprehensively across standard benchmarks
• ?? Run anywhere - from laptops to clusters to clouds (AWS, Azure, GCP, Lambda, and more)
• ?? Integrate with both open models and commercial APIs (OpenAI, Anthropic, Vertex AI, Together, Parasail, ...)

All with one consistent API, production-grade reliability, and all the flexibility you need for research.

Learn more at oumi.ai, or jump right in with the quickstart guide.

Notebook	Try in Colab	Goal
?? Getting Started: A Tour		Quick tour of core features: training, evaluation, inference, and job management
?? Model Finetuning Guide		End-to-end guide to LoRA tuning with data prep, training, and evaluation
?? Model Distillation		Guide to distilling large models into smaller, efficient ones
?? Model Evaluation		Comprehensive model evaluation using Oumi's evaluation framework
?? Remote Training		Launch and monitor training jobs on cloud (AWS, Azure, GCP, Lambda, etc.) platforms
?? LLM-as-a-Judge		Filter and curate training data with built-in judges
?? vLLM Inference Engine		Fast inference at scale with the vLLM engine

Installing oumi in your environment is straightforward:

# Install the package (CPU & NPU only)
pip install oumi  # For local development & testing
# OR, with GPU support (Requires Nvidia or AMD GPU)
pip install oumi[gpu]  # For GPU training
# To get the latest version, install from the source
pip install git+https://github.com/oumi-ai/oumi.git

For more advanced installation options, see the installation guide.

You can quickly use the oumi command to train, evaluate, and infer models using one of the existing recipes:

# Training
oumi train -c configs/recipes/smollm/sft/135m/quickstart_train.yaml
# Evaluation
oumi evaluate -c configs/recipes/smollm/evaluation/135m/quickstart_eval.yaml
# Inference
oumi infer -c configs/recipes/smollm/inference/135m_infer.yaml --interactive

For more advanced options, see the training, evaluation, inference, and llm-as-a-judge guides.

You can run jobs remotely on cloud platforms (AWS, Azure, GCP, Lambda, etc.) using the oumi launch command:

# GCP
oumi launch up -c configs/recipes/smollm/sft/135m/quickstart_gcp_job.yaml
# AWS
oumi launch up -c configs/recipes/smollm/sft/135m/quickstart_gcp_job.yaml --resources.cloud aws
# Azure
oumi launch up -c configs/recipes/smollm/sft/135m/quickstart_gcp_job.yaml --resources.cloud azure
# Lambda
oumi launch up -c configs/recipes/smollm/sft/135m/quickstart_gcp_job.yaml --resources.cloud lambda

Note: Oumi is in beta and under active development. The core features are stable, but some advanced features might change as the platform improves.

If you need a comprehensive platform for training, evaluating, or deploying models, Oumi is a great choice.

Here are some of the key features that make Oumi stand out:

• ?? Zero Boilerplate: Get started in minutes with ready-to-use recipes for popular models and workflows. No need to write training loops or data pipelines.
• ?? Enterprise-Grade: Built and validated by teams training models at scale
• ?? Research Ready: Perfect for ML research with easily reproducible experiments, and flexible interfaces for customizing each component.
• ?? Broad Model Support: Works with most popular model architectures - from tiny models to the largest ones, text-only to multimodal.
• ?? SOTA Performance: Native support for distributed training techniques (FSDP, DDP) and optimized inference engines (vLLM, SGLang).
• ?? Community First: 100% open source with an active community. No vendor lock-in, no strings attached.

Explore the growing collection of ready-to-use configurations for state-of-the-art models and training workflows:

Note: These configurations are not an exhaustive list of what's supported, simply examples to get you started. You can find a more exhaustive list of supported models, and datasets (supervised fine-tuning, pre-training, preference tuning, and vision-language finetuning) in the oumi documentation.

This section lists all the language models that can be used with Oumi. Thanks to the integration with the ?? Transformers library, you can easily use any of these models for training, evaluation, or inference.

Models prefixed with a checkmark (?) have been thoroughly tested and validated by the Oumi community, with ready-to-use recipes available in the configs/recipes directory.

To learn more about all the platform's capabilities, see the Oumi documentation.

Oumi is a community-first effort. Whether you are a developer, a researcher, or a non-technical user, all contributions are very welcome!

• To contribute to the oumi repository, please check the CONTRIBUTING.md for guidance on how to contribute to send your first Pull Request.
• Make sure to join our Discord community to get help, share your experiences, and contribute to the project!
• If you are interested in joining one of the community's open-science efforts, check out our open collaboration page.

Oumi makes use of several libraries and tools from the open-source community. We would like to acknowledge and deeply thank the contributors of these projects! ? ?? ??

If you find Oumi useful in your research, please consider citing it:

@software{oumi2025,
  author = {Oumi Community},
  title = {Oumi: an Open, End-to-end Platform for Building Large Foundation Models},
  month = {January},
  year = {2025},
  url = {https://github.com/oumi-ai/oumi}
}

This project is licensed under the Apache License 2.0. See the LICENSE file for details.